Plasma State
Chemistry ⇒ States of Matter
Plasma State starts at 10 and continues till grade 12.
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See sample questions for grade 12
Describe how plasma is used in plasma cutting technology.
Describe one industrial use of plasma technology.
Describe the difference between a fully ionized plasma and a partially ionized plasma.
Describe the process by which a neutral gas is converted into plasma.
Describe the role of plasma in the process of nuclear fusion in stars.
Explain the role of plasma in fluorescent lamps.
Explain the significance of the Debye length in plasma physics.
Explain why plasma is considered different from a gas, even though both do not have a definite shape or volume.
Which of the following best describes the Debye shielding effect in plasma?
(1) The tendency of plasma to cool rapidly
(2) The screening of electric fields by redistribution of charges
(3) The emission of light by plasma
(4) The formation of solid particles in plasma
Which of the following best explains why plasma conducts electricity?
(1) It contains free-moving ions and electrons
(2) It is a good insulator
(3) It has a fixed shape
(4) It is always cold
Which of the following is a key difference between plasma and a neutral gas?
(1) Plasma has a definite shape
(2) Plasma contains charged particles
(3) Plasma is always cold
(4) Plasma cannot conduct electricity
Which of the following is a laboratory method for generating plasma?
(1) Passing an electric current through a gas at low pressure
(2) Freezing a liquid
(3) Compressing a solid
(4) Dissolving a salt in water
Plasma is electrically ______ due to the presence of equal numbers of positive ions and electrons.
Plasma is often referred to as the ______ state of matter.
The minimum energy required to ionize a gas and form plasma is called ______ energy.
The process by which plasma returns to a neutral gas state is called ______.
True or False: Plasma can be created by heating a gas to very high temperatures.
True or False: Plasma can be influenced by magnetic fields.
True or False: Plasma can be used for sterilization and medical applications.
True or False: Plasma can be used to modify the surface properties of materials.
